129991 ÷ 49 
The aim is to understand the frequency of 49 in 129991.

Step 1:
When dividing 1 by 49, we get 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 49

On to step 2:
49 can be fit into 12 0 times, resulting in a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Append the next digit (9) from the dividend to 12 and continue with: 129 / 49

Moving on to step 3:
49 goes into 129 2 times with a remainder of 31.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 98 from 129, we get 31.
Include the next digit (9) from the dividend after 31, then repeat: 319 / 49

Advancing to step 4:
319 divided by 49 is 6 with a remainder of 25.
The number 6 becomes the next digit in our result. 
Result so far: 26.0
Subtracting 294 from 319 leaves us with 25.
Include the next digit (9) from the dividend after 25, then repeat: 259 / 49

Moving on to step 5:
259 divided by 49 is 5 with a remainder of 14.
Record the quotient 5 as the next digit in the result. 
Result so far: 265.0
Deduct 245 from 259 and we're left with 14.
Take the next digit (1) from the dividend and append it to 14, then repeat: 141 / 49

Going ahead to step 6:
141 divided by 49 is 2 with a remainder of 43.
Write down 2 as next digit of the result. 
Result so far: 2652.0
If we take 98 away from 141, we end up with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Advancing to step 7:
49 goes into 430 8 times with a remainder of 38.
The next digit of our result is 8. 
Result so far: 2652.8
Subtract 392 from 430 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 8:
When dividing 380 by 49, we get 7 with a remainder of 37.
Record the quotient 7 as the next digit in the result. 
Result so far: 2652.87
Subtract 343 from 380 to get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

On to step 9:
When dividing 370 by 49, we get 7 with a remainder of 27.
Write down 7 as next digit of the result. 
Result so far: 2652.877
Subtract 343 from 370 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

In conclusion, the division gives 2652.877 with a balance of 0.0027.